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6 Carat Engagement Rings

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Carat Weight: 6 Carat
5.50ct Cushion Blue Topaz Engagement Ring 0.66 Carat Round Diamond in 18ct Gold
Located in London, GB
This Stunning 5.50ct Cushion Cut Blue Topaz Engagement Ring set in 18ct White Gold with Four Claws. Featuring an intertwined Ring Shank set with 0.66ct H-SI Pave set Diamonds. This R...
Category

2010s British Modern 6 Carat Engagement Rings

Materials

White Diamond, Topaz, 18k Gold, White Gold, Gold

6.05 Carat Green Blue Aquamarine Pierced Platinum Art Deco Engagement Ring
Located in Stamford, CT
Handmade Art Deco 6.50ct Aqua pierced platinum engagement ring. circa 1940-1950. 1 Emerald cut bright greenish blue Aquamarine, approx. total weight 6.05cts, VS, 13.4 x 10.1mm, natu...
Category

Early 20th Century 6 Carat Engagement Rings

Materials

Aquamarine, Platinum

Victorian GIA 6.27ct No Heat Blue Sapphire Diamond Antique Cluster 18K Gold Ring
Located in New York, NY
Victorian GIA 6.27ct No Heat Cushion Blue Sapphire Diamond Antique Vintage Cluster 18K Gold Ring. BEHOLD THE MAGIC, THE LEGENDARY SAPPHIRES FROM PAILIN - beauty isn't just stunning, ...
Category

1890s European Victorian Antique 6 Carat Engagement Rings

Materials

Diamond, Blue Sapphire, 18k Gold

GIA Certified 6.10 Carat Round Diamond Platinum Ring 3X
Located in Rome, IT
Introducing the stunning GIA Certified 6.10 Carat Round Diamond Platinum Ring, embellished with pavé diamonds. At the center of this magnificent ring dazzles a breathtaking round-cut...
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Platinum

Exceptional GIA Certified 6.06 Carat Marquise Diamond Ring
Located in Rome, IT
Presenting the Exceptional GIA Certified 6.06 Carat Marquise Diamond Ring, featuring a stunning 6-carat diamond with a longer ratio that enhances its graceful appearance. This remark...
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Gold, 18k Gold, White Gold

GIA Certified 6.18 Carat Emerald Cut Diamond Ring
Located in Rome, IT
Discover the epitome of elegance and sophistication with this breathtaking engagement ring, a true testament to timeless design and exquisite craftsmanship. At its heart lies a capti...
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Emerald

GIA Certified 6 Carat Round Brilliant Cut Diamond Ring
Located in Rome, IT
GIA Certified 6.24 Carat round Diamond Solitaire Engagement Ring g Color vs1 Clarity Excellent polish excellent symmetry faint fluorescence
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Platinum

Opal Ring 18k Rose gold diamond ring designer round white opal center diamond ba
Located in Overland Park, KS
This listing is for a 18k rose gold white opal ring. It features a 6mm oval white opal with nice color play and approx. .06tcw H SI round brilliant diamonds. Size 6.75, this is an un...
Category

21st Century and Contemporary Modern 6 Carat Engagement Rings

Materials

Diamond, Opal, Gold, 18k Gold, Rose Gold

Minor Oil GRS Certified 6 Carats VIVID Green Emerald Diamond Ring
Located in Rome, IT
An exquisite GRS certified 6 Carat Green Emerald Ring with two side trapezoid diamonds set in solid platinum Also the side trapezoids are GIA certified The emerald has been certi...
Category

2010s Unknown Modern 6 Carat Engagement Rings

Materials

Emerald, Diamond, Platinum

14K Yellow Gold 6+ Carat Square NO HEAT Ceylon Sapphire AGL and Diamond Ring
Located in Lexington, KY
This ring is truly special. This 14k yellow gold ring contains a 6+ carats of square cushion NO HEAT Ceylon sapphire as well as 1.75 carats of diamond! This heavy hitter of a ring is...
Category

1960s Contemporary Vintage 6 Carat Engagement Rings

Materials

White Diamond, Blue Sapphire, Gold, 14k Gold, Yellow Gold

GIA 6.16 Carat Ceylon Sapphire Diamond 18k White Gold Ring
Located in Beverly Hills, CA
One GIA 6.16 Carat Ceylon Sapphire Diamond 18k White Gold Ring. Featuring one GIA cushion mixed cut sapphire of 6.16 carats, accompanied by GIA #5231206720 stating the sapphire is of...
Category

21st Century and Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Blue Diamond, Sapphire, Blue Sapphire, Gold, 18k...

Made in Italy GIA Certified 6 Carat Fancy Yellow Diamond Ring VVS2 Clarity
Located in Rome, IT
Antinori di Sanpietro fancy yellow color Cushion Cut Engagement Ring and this ring is perfection with a 6 carat Fancy Yellow Cushion Cut Diamond of VVS2 clarity, GIA Certified, with ...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Yellow Diamond, White Diamond, Diamond, Yellow Gold, White Gold, 18k Gold

Flawless GIA Certified 6 Carat Emerald Cut Diamond Ring Ideal Proportions
Located in Rome, IT
FLAWLESS GIA Certified 6 Carat Emerald Cut Diamond Ring Ideal Proportions
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Emerald

GIA Certified 6 Carat Platinum Round Brilliant Cut Diamond Engagement Ring
Located in Rome, IT
GIA Certified 6 Carat Round Brilliant Cut Diamond Solitaire Engagement Ring. The main diamond is a Round Brilliant Cut diamond weighing 6 ct, I in color, VS1 in clarity.
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified 6 Carat VVS1 Oval Diamond Ring
Located in Rome, IT
An amazing oval diamond ring with a pave of round brilliant cut diamonds. The main stone is amazing please check the video of the main stone it weights 6 carats VVS1 Clarity
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

White Diamond, Diamond, 18k Gold

GRS LOTUS ICA LAB Certified Ceylon Blue Sapphire Diamond Cocktail Ring
Located in Rome, IT
An exquisite GRS, Lotus and ICA LAB certified sapphire has bright periwinkle blue color and a stunning play of light! The sapphire is also certified as completely unheated! The vast ...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Blue Sapphire, White Diamond, Diamond

Rubellite Diamond 18k Yellow Gold Ring
Located in Beverly Hills, CA
One Rubellite Diamond 18k Yellow Gold Ring. Featuring one octagonal step cut rubellite of 6.42 carats. Accented by 40 round brilliant cut diamonds with a total weight of 0.54 carat, ...
Category

21st Century and Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Rubelite, Gold, 18k Gold, Yellow Gold

EXCEPTIONAL GIA Certified 6 Carat Emerald Cut Diamond Platinum Ring
Located in Rome, IT
Antinori Fine Jewels is proud to offer this important and impressive 6 carat GIA certified Emerald cut diamond ring. The ring consists of one emerald cut diamond weighing 6 carat ...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Emerald, White Diamond, Diamond, Platinum

IGI 14K 6.02ct Garnet&Sapphires&Diamond Antique Art Deco Engagement Ring
Located in Kaohsiung City, TW
*IGI 14K 6.02 Ct Fanta Garnet&Sapphires Diamonds Antique Art Deco Style Engagement Ring * IGI-certified intense orange 6.02 ct spessartite garnet sits on a double halo 14K pink gold ...
Category

21st Century and Contemporary Taiwanese Contemporary 6 Carat Engagement Rings

Materials

Purple Sapphire, Green Sapphire, Yellow Sapphire, Pink Sapphire, Blue Sa...

GIA Certified 6 Carat Cushion Cut Green Emerald Ring
Located in Rome, IT
Discover the pinnacle of sophistication with our breathtaking 6.11ct Natural Emerald. Certified by the prestigious Gemological Institute of America (GIA), rest assured of its impecc...
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Emerald, 18k Gold, Platinum

Exceptional GIA Certified 6 Carat Oval Cut Diamond Ring E Color
Located in Rome, IT
GIA Certified 6 Carat Oval Cut Diamond, a testament to timeless beauty and unparalleled craftsmanship. Set in solid platinum, this extraordinary ring is a beacon of luxury and refin...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

White Diamond, Diamond, 18k Gold

Alexander Beverly Hills GIA 5.24ct Fancy Yellow VS2 Diamond Three-Stone Ring 18k
Located in BEVERLY HILLS, CA
Stunning modern all GIA certified fancy yellow canary diamond, complimented by GIA certified trapezoid diamonds. High jewelry by Alexander Beverly Hills. diamond in the mounting 6.09...
Category

21st Century and Contemporary American Contemporary 6 Carat Engagement Rings

Materials

Yellow Diamond, Diamond, Platinum, Yellow Gold, 18k Gold, Gold

GIA Certified 6 Carat Cushion Brilliant Cut Diamond Engagement Ring E FLAWLESS
Located in Rome, IT
This exquisite 18k white gold ring presents a breathtaking centerpiece: a 6 carat GIA-certified Cushion briliant diamond. The diamond boasts a remarkable E color and FLAWLESS clari...
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

GIA Certified 6 Carat E VS2 Oval Diamond Solitaire Engagement Platinum Ring
Located in Rome, IT
Introducing an engagement ring of extraordinary beauty featuring a GIA-certified 6-carat diamond. The central stone, with GIA certification, is a rare quality diamond weighing 6 cara...
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

White Diamond, Diamond, Platinum

Type IIA Golconda D Color GIA Certifield 6 Carat Emerald Cut Diamond Ring
Located in Rome, IT
Behold, an exquisite 6-carat Type IIa diamond ring of remarkable length. Type IIa diamonds, renowned for their unparalleled chemical purity, lack the trace elements of nitrogen that...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Art Deco Inspired Sapphire and Diamond Platinum Ring
Located in Beverly Hills, CA
One Art Deco Inspired Sapphire and Diamond Platinum Ring. Featuring one cushion cut sapphire weighing approximately 6.00 carats. Accented by 22 round brilliant cut diamonds with a to...
Category

21st Century and Contemporary Art Deco 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

6 Carat Fancy Yellow Cushion Cut Eternity Band Ring 18K
Located in Rome, IT
Exquisite Fancy Yellow Eternity Ring! Prepare to be enchanted by the radiant beauty of this stunning eternity band, meticulously crafted to...
Category

2010s American 6 Carat Engagement Rings

Materials

Yellow Diamond, Diamond, 18k Gold, Yellow Gold, 14k Gold

6.26 Carat No-Heat Ruby Old Mine Cut Diamonds 18K Yellow Gold Ring
Located in Rome, IT
breathtaking masterpiece, the 6.26 Carat No-Heat Ruby Ring, adorned with authentic Vintage Old Mine Cut Diamonds, all set in luxurious 18K Yellow Gold. The focal point of this ring i...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Ruby, Diamond, Yellow Gold, 18k Gold

EXCEPTIONAL VIVID GREEN 6 Carat Colombian Emerald Diamond Ring
Located in Rome, IT
An exquisite and very large 6 carat green emerald set with two side trapezoid diamonds with a total weight of 7 carats the side diamonds are very high quality as well F color VS/VV...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold, Platinum

GIA Certified 6.40 Carat Sri Lanka Blue Sapphire Unheated Diamond Ring
Located in Rome, IT
timeless elegance of our Platinum Ring featuring a centerpiece of a breathtaking unheated 6.40ct Oval-shaped Fine Natural Sapphire. Certified by G.I.A. with origin from Sri Lanka, t...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Blue Sapphire, White Diamond, Diamond, White Gold, 18k Gold

GIA Certified 6.12 Carat Cushion VVS2 Fancy Yellow Diamond Platinum Ring
Located in Rome, IT
Discover the epitome of elegance and craftsmanship with our magnificent GIA Certified 6.12 Carat Cushion VVS2 Fancy Yellow Diamond Platinum Ring. This exquisite piece is a true testa...
Category

2010s Contemporary 6 Carat Engagement Rings

Materials

Yellow Diamond, Platinum

Golconda Type IIA GIA Certified 6 Carat D FLAWLESS Clarity
Located in Rome, IT
This extraordinary platinum ring is a masterpiece of jewelry, featuring a central diamond of exceptional beauty and value. The main diamond, a true rarity, is a 6-carat round brillia...
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

Diamond, White Diamond, 18k Gold

J. Birnbach 6.35 carat GIA Emerald Cut Diamond Ring with Graduated Baguette Band
Located in New York, NY
This one of a kind engagement ring is a unique statement piece by J. Birnbach. The ring features a 6.35 carat GIA certified emerald cut diamond, I color and VVS2 clarity as describ...
Category

2010s American 6 Carat Engagement Rings

Materials

Diamond, Platinum

Roman Malakov 4.10 Carat Oval Cut Diamond Three Stone Engagement Ring
Located in New York, NY
A classic three-stone engagement ring showcasing a 4.10 carat oval cut diamond, L Color and I1 in Clarity. Flanked by trillion shape diamonds on each side weighing 2.09 carats total....
Category

21st Century and Contemporary American Contemporary 6 Carat Engagement Rings

Materials

Diamond, Platinum

Vintage Natural 7.00 Carat Blue Sapphire Diamond Ring
Located in Miami, FL
Elevate your style with our Vintage Blue Sapphire and Diamond Ring, crafted in 14K Yellow Gold. A mesmerizing 6.00-carat natural earth-mined blue sapphire steals the spotlight, compl...
Category

21st Century and Contemporary European Art Nouveau 6 Carat Engagement Rings

Materials

Diamond, Blue Sapphire, 14k Gold

GIA Certified 6.41 Carats Pear Shape Diamond Three Stone Ring
Located in New York, NY
Elegant and well crafted three stone engagement ring showcasing GIA Certified 6.41 carat pear shape natural diamond center stone, F color, IF in clarity . Flanking on each side are t...
Category

21st Century and Contemporary American Contemporary 6 Carat Engagement Rings

Materials

Diamond, Platinum

6 carat engagement ring
Located in Dublin, IE
Erin gems & jewelry is delighted to bring you a magnificent emerald cut diamond made in 18k yellow gold. Entirely custom made to order, the diamond will be chosen by you the client...
Category

2010s Irish Modern 6 Carat Engagement Rings

Materials

White Diamond, 18k Gold, Yellow Gold

GIA 18K 6.26 Ct Indicolite Tourmaline and 2.88 Ct Pink Diamonds Engagement Ring
Located in Kaohsiung City, TW
*GIA 18K 6.26 Ct Indicolite Tourmaline and 2.88 Ct Pink Diamonds Engagement Ring* GIA-certified natural Indicolite Tourmaline weighing 6.26 ct is set on an 18K white gold luxury fas...
Category

21st Century and Contemporary Taiwanese Contemporary 6 Carat Engagement Rings

Materials

Indicolite, Pink Diamond, Tourmaline, Diamond, White Gold, 18k Gold, Gold

Louis Newman & Co GIA Certified 6.11 Carat Emerald Cut Diamond Three Stone Ring
Located in New York, NY
Center Stone is 6.11 Carat GIA certified Emerald Cut with an L color and VVS2 Clarity. It is very hard to capture the true color of the diamond but it does look better in person than...
Category

2010s American 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Platinum

Natural Citrine Ring 6.5 14k W Gold 6.48 Cts Certified
Located in Brooklyn, NY
Natural Finely Faceted Quality Citrine Ring Size 6.5 14k W Gold 6.48 Cts Certified $3,950 310628 This is a Unique Custom Made Glamorous Piece of Jewelry! Nothing says, “I Love you”...
Category

2010s American 6 Carat Engagement Rings

Materials

Citrine, Gold

GIA Certified 6.07 Carat Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
Vintage 1950-1960 6.07ct cushion cut Sapphire engagement ring with straight baguette accents in Platinum. GIA certified natural corund...
Category

1950s Vintage 6 Carat Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

GIA Certified 6 Carat Oval Cut Diamond Solitaire Ring
Located in Rome, IT
A very beautiful 6 carat GIA certified oval cut diamond ring set with two delicate cadillac diamonds at each side VS2 Clarity H Color VG polish VG symmetry
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified 6 Carat Oval Diamond Ring E Color
Located in Rome, IT
An exceptional and impressive, 6 carat oval-cut diamond solitaire ring. Set in 18 carat white gold, in a fancy mounting made in Italy by our expert gold...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Diamond

GIA Certified 6 Carat Radiant Cut Diamond Ring Flawless Clarity
Located in Rome, IT
An amazing 6 radiant cut diamond ring I COLOR VVS1
Category

2010s Unknown Contemporary 6 Carat Engagement Rings

Materials

White Diamond, Diamond, Platinum

3.21 Carats Natural Aquamarine Diamonds set in 14 KYG Ring
Located in Los Angeles, CA
This delicately handcrafted ring features a 3.21 carat aquamarine set in a 14K yellow gold setting. The aquamarine, with its soft and captivating color, comes to life in this elegant...
Category

21st Century and Contemporary Unknown 6 Carat Engagement Rings

Materials

Aquamarine, Diamond, Yellow Gold

AGL Certified 6 Carat Vivid Green Emerald Ring Insignificant OIL
Located in Rome, IT
Showcasing an exquisite investment grade emerald cut green natural emerald certified by AGL with top color and top clarity. Based on emerald...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Diamond, White Diamond, Emerald

Roman Malakov GIA Certified 5.11 Carats Oval Cut Diamond Three-Stone Ring
Located in New York, NY
Elegantly made three stone ring featuring an oval cut diamond weighing 5.11 carats flanked by two epaulet diamond on each side, weighing 1.02 carats total, D-E color and VS in clarit...
Category

21st Century and Contemporary American Contemporary 6 Carat Engagement Rings

Materials

Diamond, Platinum

GIA Certified 6 Carat E SI1 Oval Diamond Engagement Ring "Alexandria"
Located in New York, NY
Elevate moments of pure romance with the "Alexandria" diamond engagement ring, a breathtaking fusion of grandeur and elegance. Taking pride of place is a magnificent GIA Certified 6 ...
Category

2010s American Modern 6 Carat Engagement Rings

Materials

Diamond

GIA 18K 6.21 Carat Paraiba&Diamonds Art Deco Style Engagement Ring
Located in Kaohsiung City, TW
*GIA 18K 6.21 Carat Paraiba&Diamonds Art Deco Style Engagement Ring* This stunning 6.21 ct GIA-certified natural blue Paraiba is set on an 18K white gold band adorned with natural r...
Category

21st Century and Contemporary Taiwanese Contemporary 6 Carat Engagement Rings

Materials

Paraiba, Tourmaline, Diamond, 18k Gold, White Gold, Gold

J. Birnbach 6.37 carat Pear Shape Diamond Engagement Ring with Tapered Baguettes
Located in New York, NY
This timeless engagement ring by J. Birnbach features a stunning 6.37 carat pear shape diamond, certified by GIA as I color and SI2 clarity. This lovely diamond is a beautiful shape,...
Category

2010s American 6 Carat Engagement Rings

Materials

Diamond, Platinum

GIA Certified 6 Carat Fancy Yellow Radiant Cut Platinum Ring
Located in Rome, IT
A STUNNING yellow diamond ring! GIA certified 6 carat Radiant cut Fancy Yellow, center diamond. .85 carats of white side diamonds. Custom platinum a...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

White Diamond, Diamond, Platinum

Mint Green Tourmaline Ring 6.33 Carat Oval
Located in Beverly Hills, CA
18K yellow gold ring set with a vibrant 6.33 carat Mint Green Tourmaline oval, decorated with a total of 0.61 carat, round brilliant collection diamonds. Ring size 6. Resizing is com...
Category

21st Century and Contemporary American Contemporary 6 Carat Engagement Rings

Materials

Tourmaline, Multi-gemstone, White Diamond, Diamond, Yellow Gold, 18k Gold

GIA Certified 5 Round Cut Diamond Ring
Located in Rome, IT
Round Brilliant Cut Diamond Halo Platinum Engagement Ring. The ring weighs 6.8 grams, size 5.25, the center stone is a Natural Round Brilliant Cut diamond weighing 5.06 ct, E in col...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Emerald, White Diamond, Diamond

GIA Certified 5.42 Carats Cushion Cut Diamond Ring with Tapered French Cuts
Located in New York, NY
A stunning well-crafted engagement ring featuring a beautiful 5.42 carats cushion cut diamond that GIA certified as J color, VS1 in clarity, set in a classic four prong basket settin...
Category

21st Century and Contemporary American Contemporary 6 Carat Engagement Rings

Materials

Diamond, Platinum

GIA Certified 6 Oval Cut Diamond Ring Flawless Clarity D Color
Located in Rome, IT
This elegant, high quality, and quite substantial 6 carat emerald cut diamond has flawless clarity, beautiful white color, and a bright, lively, sophisticated cut! the diamond has ...
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Emerald, White Diamond, Diamond

Mid-Century 6.60 CTW No Heat Ceylon Sapphire 18 Karat Gold Vintage Ring GIA
Located in Philadelphia, PA
Centering a cushion cut sapphire weighing 6.44 carats - transparent light blue in color Natural Ceylon in origin with no indications of heat treatment Prong set in basket and flanke...
Category

1950s Vintage 6 Carat Engagement Rings

Materials

Blue Sapphire, Diamond, White Gold, 18k Gold, Gold

Art Deco 6.43 CTW Old European Diamond Ruby Platinum X Engagement Ring GIA
Located in Philadelphia, PA
Centering an old European cut diamond weighing 3.75 carats - M color with VS2 clarity Set with wide prongs and flanked by rows of calibré cut ruby shoulders and 'X' motif profile Wei...
Category

1930s Art Deco Vintage 6 Carat Engagement Rings

Materials

Diamond, Ruby, Platinum

GRS Certified 6.70 Carat Green Emerald Diamond Ring
Located in Rome, IT
GRS Certified 6.70 Carat Green Emerald Diamond Ring emerald side diamonds
Category

2010s Italian Modern 6 Carat Engagement Rings

Materials

Diamond, Emerald, Platinum

Shop 6-Carat Diamond Rings and Other Engagement Rings on 1stDibs

Looking for a 6-carat diamond engagement ring?

Shopping for the right antique, new or vintage engagement ring can prove daunting. Whether you’re looking for that perfect Art Deco engagement ring, a vintage sapphire engagement ring or a fashionable contemporary accessory, it’s important to choose a style that speaks to you.

Rings have long been signifiers of marriage and committed relationships. The modern diamond engagement ring can be traced back to 1477, when Archduke Maximilian of Austria commissioned an expensive diamond ring for his betrothed. Diamond rings subsequently became extremely popular among the European aristocracy. Later, during the Victorian era, the popularity of diamond engagement rings had filtered down to the middle class, owing to the increasing accessibility — and affordability — of gold and diamonds.

Authentic antique Victorian-era engagement rings were frequently set in rose or yellow gold and they are highly collectible. Designs for Victorian engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal. Diamonds were likely to be small rose- or old-mine-cut (the ancestor of today’s cushion-cut) stones. The former are often associated with antique styles like Victorian or Georgian, as rose-cut diamonds are uncommon in modern jewelry. The diamonds were typically set in a group of five in a band or as a solitaire.

Victorian-era engagement rings also saw other gemstones accompanying diamonds. Small seed pearls and moonstones were popular. Other sentimental and romantic motifs such as hearts and stars took hold as well. When Prince Albert became engaged to Queen Victoria, he gave her a serpent ring with emerald eyes, her birthstone. This initiated a widespread craze for snake jewelry.

In 1886, esteemed American luxury firm Tiffany & Co. introduced its solitaire diamond design, which is still among the most popular styles of engagement rings. The Tiffany Setting raises the stone above the band on six prongs, allowing its facets to catch the light and reflect through the stone.

French jewelry house Cartier, which pioneered the use of platinum in fine jewelry and helped define Art Deco, ​​sought to render the diamonds in their engagement rings and other rings as brilliantly as possible. The brand’s timeless Solitaire 1895 engagement ring gave the impression of delicate lace.

Edwardian engagement rings and, afterward, Art Deco engagement rings that followed in the wake of Queen Victoria’s death in 1901 would be characterized by complex geometric designs and platinum settings. Owing to the Art Nouveau movement, nature was a major theme for Edwardian jewelry, while the diamond ring designs of the Art Deco period were inspired by Cubism as well as ancient Egypt. Art Deco engagement rings are bold and colorful and feature gems cut in nontraditional ways.

Engagement rings designed during World War II were made from two-toned metals and smaller stones. Large stones were scarce, and platinum was reserved for the military. Postwar engagement rings were intended to be simpler and focused on the beauty of the diamond.

In 1947, De Beers Consolidated Mines, with the support of Philadelphia ad agency N.W. Ayer & Son, introduced the slogan “A diamond is forever” in a marketing campaign that emphasized a connection between diamonds and romance. Diamond sales skyrocketed, and diamond engagement rings became intertwined with the post–World War II marriage boom, which coincided with the ascension of specific diamond cuts.

The round brilliant cut, which consists of an astounding 58 facets, continues to be the most popular cut to this day. Jewelers such as Harry Winston had already gained a reputation for his talents by the time the De Beers campaign debuted, and he is said to have favored emerald-cut diamonds.

When it comes to carat weight and finding the perfect 6-carat diamond ring, you'll want to become familiar with the 4Cs, which is the official grading system that was established by the Gemological Institute of America (GIA).

According to the GIA, “Diamonds are weighed to a thousandth (0.001) of a carat and then rounded to the nearest hundredth, or point. Over a carat, diamond weights are usually expressed in carats and decimals.” Out of all the 4Cs, the weight of the diamond is the most scientific and less a matter of opinion. But the weight is also not the most important signifier of a stone’s value. A three-carat gem can be less valuable than a one-carat stone, for example, if all of the other attributes are of lesser quality in the larger diamond. 

For everything from understanding the 4Cs to choosing between antique, vintage, contemporary and custom styles, get expert tips to help you find just the right ring. Additionally, explore our buying guides for a close look at antique engagement rings, Art Deco engagement rings and vintage engagement rings

When you’re ready to mark your momentous occasion, find 6-carat diamond rings and other engagement rings on 1stDibs.

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